Methods and devices for hearing damage notification and intervention

Abstract

At least one exemplary embodiment is directed to a method of monitoring hearing health comprising: measuring a first acoustic sound pressure level due to an ambient audio signal; measuring a second acoustic sound pressure level due to an emitted audio signal from a speaker; calculating a total sound pressure level dosage, where the total sound pressure level dosage is calculated using the first acoustic sound pressure level and a first time span, and the second acoustic sound pressure level and a second time span associated, where the first time span is the time associated with the measured first acoustic sound pressure level and second time span is the time associated with the measured second acoustic sound pressure level; and sending a notification signal when total sound pressure level dosage is greater than a threshold value.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the priority benefit of 60 / 805,469, under 35 U.S.C. § 119(e), filed 22 Jun. 2006, and claims the priority benefit of 60 / 805,985, under 35 U.S.C. § 119(e), filed 28 Jun. 2006, both of which are incorporated herein by reference in their entirety.FIELD OF THE INVENTION[0002]The invention relates in general to methods and device for notifying a user or intervening in the audio dosage level a user receives, and more particularly, though not exclusively, a method and device for monitoring the ambient noise level and the audio level produced by an ear canal receiver (ECR) and incorporating both into a total sound pressure level (SPL) dosage value.BACKGROUND OF THE INVENTION[0003]With the advent of an industrial society, people are exposed to noise pollution at greater and greater levels; both from background, such as street traffic, airplanes, construction sites and intentional exposure to high sound levels such as cell p...

AI Technical Summary

Benefits of technology

[0014]In at least one further exemplary embodiment the device intervenes the production of audio content by estimating and / or measuring the sound pressure levels generated by devices capable of Audio Playback (i.e. headphones, personal music players, loudspeakers, mobile phones, etc.). At least one exemplary embodiment measures the sound pressure levels by inserting the personal Hearing Damage intervention client system into the audio signal path, between the audio playback device and the Acoustic Transducers. A buffer introduced into the audio signal path allows for the automatic attenuation of potentially damaging signal content before they are ever reproduced as sound pressure by the acoustical transducers, preempting the potential for Hearing Damage.

[0015]At least one exemplary embodiment monitors and minimize Hearing Damage for music enthusiasts using headphones at high volumes for long periods of time. The system can make recommendations regarding a Safe Listening Duration for the user given the current signal level. Overtime, the system can collects an SPL Exposure History for the user, helping improve the accuracy of the SPL Dose calculations and listening duration recommendations. The SPL Exposure History includes both a Listening Habits History and an Environmental Noise History.

Problems solved by technology

Studies show that ear damage, leading to permanent hearing impairment is not only increasing in the general population, but increasing at a significantly faster rate in younger populations.

The potential for hearing damage is a function of both the loudness and the duration of exposure to the sound stimulus.

Although hearing damage due to industrial or background noise exposure is more thoroughly understood, the risk of exposing one's self to excessive noise, especially with the use of headphones has also been recently studied.

These prior art devices have been less than satisfactory because they do not completely prevent high decibel noise from reaching the ear, and do not account for the duration of exposure to harmful sounds at the ear.

However, there is no monitoring of the noise over time to account for the cumulative effect.

Furthermore, there is no accounting for any restorative effects for sound pressure levels which are healing to the ear rather than destructive.

However, the device does not take into account the cumulative effect of the noise or the effect of any restorative period.

This approach is ineffective as it does not take into account listening duration and the calculation of risk for auditory injury.

Other headphones are maximum-limited to produce levels that can still result in significant overexposure given enough time, or limit the user to levels, which may not be sufficient to achieve a short term listening level.

In the latter case, consumer acceptance for the protective gear could be severely limited and a product would fail to survive in a competitive market and therefore be of no use.

The limitation of this approach is that it gives no consideration to the duration of exposure, and again either the user's chosen listening level cannot be achieved because the maximum level is too limited, or the level is sufficient to allow the user access to high enough sound levels, but risk overexposure due to potential duration of use.

Recent studies indicate that prolonged headphone listening at high volumes can cause Hearing Damage.

However, no conventional art system monitors the SPL Dosage that is a combination of the attenuated ambient audio signal (passing through an earpiece) and the audio signal produced by an ear canal receiver, and compares the SPL dosage to an unprotected ear, and notifies a user when the earpiece should be switched to the other ear to minimize hearing damage to an unprotected ear.

Images